The Adult Patient with Eisenmenger Syndrome: A Medical Update after Dana Point Part II: Medical Treatment - Study Results

Pulmonary hypertension in adults with congenital heart defects (ACHDs) in light of the 2022 ESC PAH guidelines-part II: supportive therapy, special situations (pregnancy, contraception, non-cardiac surgery), targeted pharmacotherapy, organ transplantation, special management (shunt lesion, left ventricular disease, univentricular hearts), interventions, intensive care, ACHD follow-up, future perspective

The number of adults with congenital heart defects (ACHDs) is steadily increasing and is about 360,000 in Germany. Congenital heart defect (CHD) is often associated with pulmonary hypertension (PH), which sometimes develops early in untreated CHD. Despite timely treatment of CHD, PH not infrequently persists, redevelops in older age, and is associated with significant morbidity and mortality. The revised European Society of Cardiology (ESC)/European Respiratory Society (ERS) 2022 guidelines for the diagnosis and treatment of PH represent a significant contribution to the optimized care of those affected. However, the topic of "adults with congenital heart defects" is treated only relatively superficially in this context. After the first part commenting on a broad range of topics like definition, epidemiology, classification, diagnostics, genetics, risk stratification and follow-up, and gender aspects, the second part focuses on supportive therapy, special situations (pregnancy, contraception, non-cardiac surgery), targeted pharmacotherapy, organ transplantation, special management [shunt lesion, left ventricular (LV) disease, univentricular hearts], interventions, intensive care, ACHD follow-up, and future perspective. In the present article, therefore, this topic is commented on from the perspective of congenital cardiology. By examining these aspects in detail, this article aims to fill the gaps in the existing guidelines and provide a more thorough understanding from the perspective of congenital cardiology.

Clinical features and outcome of dogs and cats with bidirectional and continuous right-to-left shunting patent ductus arteriosus

Background

Studies describing the clinical progression of animals with reverse patent ductus arteriosus (PDA) are lacking.

Objectives

To describe the signalment, presenting signs, echocardiographic features, and survival in a group of dogs and cats with bidirectional and continuous right‐to‐left PDA.

Animals

Forty‐six client‐owned animals included, comprising 43 dogs and 3 cats with bidirectional or continuous right‐to‐left PDA.

Methods

Retrospective multicenter study. Medical records and echocardiographic findings reviewed from animals diagnosed with bidirectional or continuous right‐to‐left PDA. Impact of ductal morphology, spectral Doppler flow profile, PCV, sildenafil treatment at presentation, sildenafil dose, severity of pulmonary hypertension, general anesthesia with or without surgery and the presence of right‐sided congestive heart failure (R‐CHF) on crude mortality rate were evaluated via Mantel‐Cox log rank comparison of Kaplan‐Meier survival curves. Univariable and multivariable Cox proportional hazards analysis was performed, and hazard ratio (HR) (95% confidence intervals [CI]) was presented.

Results

Hindlimb collapse was the most common presenting sign in dogs (n = 16). Clinical signs in cats were variable. Median survival time was 626 days in dogs (range 1‐3628 days). Dogs with R‐CHF had a shorter median survival time (58 days vs 1839 days, P = .03). Dogs treated with sildenafil at initial presentation survived longer (1839 days vs 302 days, P = .03), which was the only independent predictor of survival (HR 0.35, CI 0.15‐0.86, P = 0.021).

Conclusions and Clinical Importance

Dogs and cats with reverse PDA have a variable clinical presentation and prognosis. Survival time was longer in animals prescribed sildenafil at diagnosis. Dogs with R‐CHF at presentation have a worse overall outcome.

Pulmonary hypertension in adults with congenital heart disease: Updated recommendations from the Cologne Consensus Conference 2018

In the summer of 2016, delegates from the German Respiratory Society (DGP), the German Society of Cardiology (DGK) and the German Society of Pediatric Cardiology (DGPK) met in Cologne, Germany, to define consensus-based practice recommendations for the management of patients with pulmonary hypertension (PH). These recommendations were built on the 2015 European Pulmonary Hypertension guidelines, aiming at their practical implementation, considering country-specific issues, and including new evidence, where available. To this end, a number of working groups was initiated, one of which was specifically dedicated to PH in adults associated with congenital heart disease (CHD). As such patients are often complex and require special attention, and the general PAH treatment algorithm in the ESC/ERS guidelines appears too unspecific for CHD, the working group proposes an analogous algorithm for the management of PH-CHD which takes the special features of this patient group into consideration, and includes general measures, supportive therapy, targeted PAH drug therapy as well as interventional and surgical procedures. The detailed results and recommendations of the working group on PH in adults with CHD, which were last updated in the spring of 2018, are summarized in this article.

Factors influencing outcomes in patients with Eisenmenger syndrome: a nine-year follow-up study

In patients with Eisenmenger syndrome, life expectancy is usually longer than in patients with other forms of pulmonary arterial hypertension (PAH). We conducted a cohort study in which patients were followed over a long period of time in an attempt to identify potential predictors of clinical outcomes. Sixty-seven treatment-naïve patients were enrolled (age range = 12-60 years; median age = 33 years). Baseline demographic, diagnostic, and functional parameters, plasma levels of endothelial dysfunction markers, and treatment-related data were tested for possible correlations with event-free survival. Patients were started on oral PAH drugs at the beginning of follow-up (n = 23), during follow-up (n = 33), or remained untreated (n = 11). The duration of follow-up was 0.54-9.89 years (median = 7.13 years), with an overall survival rate of 82% and an event-free survival rate of 70%. The estimated mean for event-free survival time was 7.71 years (95% confidence interval [CI] = 6.86-8.55 years). Of the 16 variables that were analyzed, the duration of exposure to PAH drugs was identified as an independent protective factor (hazard ratio [HR] = 0.25 for quartiles, 95% CI = 0.14-0.47, P < 0.001). The initial functional class (HR = 3.07; 95% CI = 1.01-9.34; P = 0.048), the severity of right ventricular dysfunction (HR = 2.51 [mild, moderate or severe dysfunction]; 95% CI = 1.22-5.19; P = 0.013) and plasma von Willebrand factor concentration (HR = 1.74 for quartiles; 95% CI = 1.07-2.83; P = 0.026) were identified as risk factors. The length of exposure to oral PAH therapies influences survival favorably in Eisenmenger patients. This may be of interest for communities where access to medications is restricted.

[Competence Network for Congenital Heart Defects: innovative research for a young patient group]

BACKGROUND

Congenital heart disease is the most frequent congenital malformation in humans and affects almost 1 % of all newborns. Thanks to advances in diagnostics and treatment, over 90 % of those affected reach adulthood today. Patient numbers are therefore growing constantly. The majority of those affected, however, remain chronically ill throughout life and require continuous specialized care. The spectrum of different clinical pictures is vast. Since this is a relatively young patient group, both research and care are lacking relevant knowledge and experience.

OBJECTIVE

The Competence Network for Congenital Heart Defects (CNCHD) was founded in 2003 to tackle the challenge of heterogeneity and accordingly small sample sizes by means of networked research. The following article offers an overview of the network and its mode of operation.

MATERIAL AND METHODS

The Germany-wide research network involves all relevant levels of research, public health care, the patient community and the general public. On the basis of a complex and flexible database infrastructure, it facilitates multicenter and interdisciplinary research in the field of congenital heart disease.

RESULTS AND DISCUSSION

The CNCHD succeeded in establishing research on congenital heart disease throughout Germany by providing a powerful research network and a suitable infrastructure. Scientists from across Germany and all over the world use this basis to jointly find answers to burning questions in the field of congenital heart disease.

Clinical and Prognostic Value of Depressive Symptoms and N-Terminal Pro-B-Type Natriuretic Peptide in Patients With Eisenmenger Syndrome

OBJECTIVES

Eisenmenger syndrome (ES) is commonly associated with depressive symptoms and elevated N-terminal pro-B-type natriuretic peptide (NT-proBNP). We investigated the predictive value of depressive symptoms and NTproBNP levels for long-term outcomes in patients with ES.

METHODS

Blood was drawn to measure NT-proBNP, and depressive symptoms were measured using the Korean version of the Beck Depression Inventory (BDI) in an outpatient clinic sample of 64 patients with ES (67% female; median age = 41.5 years [range, 21.0-74.8 years]). Cardiac events (hospitalization, emergency department visits, and cardiac death) were monitored during 3 years of follow-up.

RESULTS

During the follow-up period, 15 (23.4%) patients experienced a cardiac event. The combination of depressive symptoms and NT-proBNP levels better predicted future cardiac events than either variable alone. Patients with NT-proBNP > 510 pg/ml and a total BDI score > 10 had a 9.6 times higher risk for cardiac events than did patients with NT-proBNP ≤ 510 pg/ml or total BDI score ≤ 10 (p < .001).

CONCLUSIONS

Depressive symptoms and NT-proBNP levels are both associated with adverse clinical outcomes in ES.